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Defining the hematopoietic stem cell niche: The chicken and the egg conundrum
Author(s) -
Singbrant Sofie,
Askmyr Maria,
Purton Louise E.,
Walkley Carl R.
Publication year - 2011
Publication title -
journal of cellular biochemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.028
H-Index - 165
eISSN - 1097-4644
pISSN - 0730-2312
DOI - 10.1002/jcb.23085
Subject(s) - haematopoiesis , niche , stem cell , microbiology and biotechnology , biology , bone marrow , mesenchymal stem cell , stem cell niche , hematopoietic stem cell , lineage (genetic) , in vivo , immunology , progenitor cell , genetics , gene , ecology
Understanding the in vivo regulation of hematopoietic stem cells (HSCs) will be critical to identifying key factors involved in the regulation of HSC self‐renewal and differentiation. The niche (microenvironment) in which HSCs reside has recently regained attention accompanied by a dramatic increase in the understanding of the cellular constituents of the bone marrow HSC niche. The use of sophisticated genetic models allowing modulation of specific lineages has demonstrated roles for mesenchymal‐derived elements such as osteoblasts and adipocytes, vasculature, nerves, and a range of hematopoietic progeny of the HSC as being participants in the regulation of the bone marrow microenvironment. Whilst providing significant insight into the cellular composition of the niche, is it possible to manipulate any given cell lineage in vivo without impacting, knowingly or unknowingly, on those that remain? J. Cell. Biochem. 112: 1486–1490, 2011. © 2011 Wiley‐Liss, Inc.

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